Information

Work Experience

  • Jun. 2023 - Present, Theori, Security Researcher
  • Jul. 2021 - Jan. 2023, Republic of Korea Army HQ, Mandatory Military Service

Education

  • Jul. 2020 - Mar. 2021, KITRI Best of the Best 9th, Vulnerability Analysis (TOP30)
  • Mar. 2019 - Feb. 2025, Seoultech, Computer Science and Enginnering B.S.

CTF

2025

  • Remedy CTF, 1st as ChainLight

2024

  • DEF CON 32 CTF, 1st as MMM
  • HITCON CTF, 3rd as MMM
  • Cyber Conflict Exercise, 4th as 군필
  • Codegate, Finalist as 리원차돌짬뽕
  • BlackHat MEA CTF, Finalist as DeadSec

2023

  • Hacker’s Playground (SSTF), 1st as The Duck
  • HITCON CTF, Finalist as 프로그램털모찌
  • Whitehat Contest Korea, Finalist as 캣플코 (cat :flag_kr​:)
  • Cyber Conflict Exercise, Finalist as 군필

2022

  • Whitehat Contest Korea (National Defense Track), 3rd as NOOP
  • FSI FIESTA (University Division), 3rd as 민간인(진)
  • Codegate (University Division), Finalist as imssm99 (solo)

2021

  • Cyber Conflict Exercise (Public Institution Track), 1st as null
  • Whitehat Contest Korea (National Defense Track), 2nd as 일병진

Bug Report

2021
  • CVE-2021-25424 (SVE-2021-19928)
    • Improper Bluetooth pairing mode in Tizen device (WatchOver, KITRI BoB 9th)
  • CVE-2021-25433 (SVE-2021-19702)
    • Improper authorization vulnerability in Tizen factory reset policy (WatchOver, KITRI BoB 9th)
  • CVE-2021-25434 (SVE-2021-19703)
    • Improper input validation vulnerability in Tizen bootloader (WatchOver, KITRI BoB 9th)
  • CVE-2021-25435 (SVE-2021-19705)
    • Improper input validation vulnerability in Tizen bootloader (WatchOver, KITRI BoB 9th)
  • CVE-2021-25436 (SVE-2021-19310)
    • Improper file validation vulnerability in Tizen FOTA service (WatchOver, KITRI BoB 9th)
  • CVE-2021-25437 (SVE-2021-19311)
    • Improper access control vulnerability in Tizen FOTA service (WatchOver, KITRI BoB 9th)
  • NBB-1718
2022

TBD